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Summary: Electrochemical Performance of Graphene as Effected by
Electrode Porosity and Graphene Functionalization
Christian Punckt,a
Michael A. Pope,a
Jun Liu,b
Yuehe Lin,b
Ilhan A. Aksay*a
a Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA
b Pacific Northwest National Laboratory, Richland, WA 99352, USA
phone: (609) 258-4393
*e-mail: iaksay@princeton.edu
Received: June 11, 2010;&
Accepted: July 13, 2010
Abstract
Graphene-based electrodes have recently gained popularity due to their superior electrochemical properties. How-
ever, the exact mechanisms of electrochemical activity are not yet understood. Here, we present data from NADH
oxidation and ferri/ferrocyanide redox probe experiments to demonstrate that both (i) the porosity of the graphene
electrodes, as effected by the packing morphology, and (ii) the functional group and the lattice defect concentration
play a significant role on their electrochemical performance.
Keywords: Graphene, Sensors, Porosity, Functionalization, Catalysis
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